Means for adjusting dynamos or motors on their bed-plates.



Inv ento'r: Fideric/efiw uvzcan,

I I I Patented Apr. 22, I902.

F. B. DUNCAN.

MEANS FOR ADJUSTING DYNAMOS 0R MOTORS ON THEIR BED PLATES.

(Application filed Feb. 21. 1902.)

l zy.].

' (No Model.) I

Wifness es QM AMMA.

UNITE STATES PATENT OFFICE.

FREDERICK B. DUNCAN, OF AKRON, OHIO.

MEANS FOR ADJUSTING DYNAMOS R MOTORS ON THEIR BED-PLATES.

SPECIFICATION forming part of Letters Patent No. 697,998, dated April 22, 1902. Application filed February 21, 1902. Serial No. 95,128. (No model.)

To all whom it may concern: Referring to the figures, 1 is the bed-plate,

Be it known that I, FREDERICK B. DUNCAN, provided with slots 4, that taper at the side asubject of Edward VII, King of England, refrom below. The feet 3 (suggested by dotted 5o siding atAkron,in the county of Summitand lines) of the dynamo or motor have holes 5 State of Ohio, have invented a certain new and through which the round portions of the bolts useful Improvement in Means for Adjusting pass and are secured by nuts (indicated by dot- Dynamos and Motors on Their Bed-Plates, of ted lines) in the usual manner. The bedwhich the following is a specification. plate and feet are provided with the usual ad- 55 My invention has relation to improvements justing screw and nut (shown in dotted lines) to in means for adjusting and retaining dynafor moving the latter on the former. The mos and motors on their bed-plates bolts 5, by which these two parts are united,

In ordinary methods of construction the dyhave pyramidal heads that accurately fit the namo or motor is secured on its bed-plate by sides of the slots 4. When these bolts are 60 common round bolts that pass through holes drawn tight by theirnuts, as in originally setin the feet of the motor or dynamo and are ting up the machine, or after they have been drawn tight by nuts bearing on the latter. loosened to permit the feet to be drawn back, WVhen the belt that drives the armature beas just stated, the rectangular pyramidal comes loose, the bolts are loosened and the heads draw firmly into their seats and accu- 65 motor or dynamo drawn back by a screw for rately center the round parts in the slots,

the purpose. The effect of drawing the belt thus at all times securing the feet against any tight and the constant lateral strain on the twisting on its bed from lateral strain of the shaft of the machine in one direction tends belt or otherwise and insuring its accurate to twist it, thereby tending to cause the belt alinement at all times. 7 to run off from the pulley and affecting the Having thus described myinvention, what accurate alinement of the machine, inasmuch I claim, and desire to secure by Letters Patas the bolts are loose in the slot and only bear ent, is on the sides of the slots. 1. An improved bed-plate for dynamos and The object of my invention is to overcome motors having slots tapering from below,bolts 75 this difficult-y and by a simple device cause with pyramidal heads to retain the dynamo the bolts to be self-centering and the motor or motor, substantially as shown and for the or dynamo self-alining whenever tightened. purpose specified.

To the accomplishment of the aforesaid ob- 2. The combination with a bed-plate for ject my invention consists in the peculiar and dynamos and motors, having slots with sides 80 novel construction, arrangement, and combisloping outward from above, of bolts for renation of parts hereinafter described and taining a dynamo or motor thereon having then specifically pointed out in the claims, heads adapted to fit the sides of said slots, reference being had to the accompanying substantially as shown and described. drawings, which form a part of this specifi- In testimony that I claim the above I here- 5 cation. unto set my hand in the presence of two sub- In the accompanying drawings, in which scribing witnesses.

similar reference-numerals indicate like parts in the different figures, Figure 1 is a plan of FREDERICK B. DUNCAN. my improved becLplate with the dynamo or motor suggested by dotted lines; Fig. 2, a sec- In presence ot'- tion of the same at the line 00 m; and Fig. 3 O. P. HUMPHREY, and Fig. 4:, plan and side elevations, respec- C. E. HUMPHREY.

tively, of the retaining-bolts. 

